Welcome to MIRIS Homepage

The MIRIS (Multipurpose IR Imaging System) is the main payload of the third Korean scientific small satellite, STSAT-3. MIRIS consists of two near-infrared cameras. One is the Space Observation Camera (SOC) and the other is the Earth Observation Camera (EOC). The SOC is a near-IR (0.9–2.0 μm) imaging camera with an aperture of 80 mm and a field of view of 3.67° × 3.67°, using a 256 × 256 PICNIC sensor. The telescope part of the SOC is cooled down to 200 K by radiative cooling to reduce the thermal noise, and the Dewar part is cooled down to 90 K to ensure the best performance of the IR sensor. There are two scientific goals for the SOC:

  • To measure the absolute brightness and the fluctuation of the cosmic IR background (CIB) to study its origin and
  • To survey the Paα emission line along the Galactic plane to study the warm ionized medium.

There is a filter wheel with six filters in the Dewar to assist in the completion of these objectives. The SOC flight model was successfully launched in November of 2013 and performed observations by 2015 May.

Flight model of MIRIS SOC

Flight model of MIRIS SOC.

MIRIS Space Observation Data Release

MIRIS (Multi-purpose InfraRed Imaging System) is a compact near-infrared space telescope launched in 2013 November as the main payload of STSAT-3 (Science and Technology Satellite 3). The main missions of MIRIS are:

  • Pa-α line survey along the Galactic plane
  • Large area (∼10°×10°) surveys of three pole regions (north ecliptic pole and north and south Galactic poles)
  • Bi-daily monitoring survey toward the north ecliptic pole

MIRIS started observations for the main missions in 2014 March and completed in 2015 May.

We release the data of these observations through the homepage of MIRIS. The pre-processed FITS-formatted data file is provided for each target and contains images stacking frames obtained during the observation. To query and download observation data, please visit Data page. Details of the observation data are also described in the Data page. We welcome any kind of utilization of MIRIS data by interested researchers. Please contact us for further information.

  • Contact point: Dr. Wonyong Han, MIRIS Project PI, KASI (whan@kasi.re.kr, 042-865-3219)